Mark Brown broonie@kernel.org 於 2020年6月30日 週二 下午6:40寫道：
On Tue, Jun 30, 2020 at 05:16:15PM +0800, Yu-Hsuan Hsu wrote:
S8 and S24 formats does not work on this machine driver so force to use S16_LE instead.
In addition, add constraint to limit the max value of rate because the rate higher than 96000(172000, 192000) is not stable either.
What is the source of these restrictions - are they due to the component devices? If they are then the component devices ought to be setting suitable constraints themselves.
I'm not sure why it happened. But I guess it is not the issues on those components because they work normally on other machine drivers. Because this driver is old and lacks maintenance, I think we can just filter some unstable formats. Actually, those formats are very rarely used as well.